EQUILIBRIUM OF RIGID BODIES PROBLEMS.
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1. Derive an expression for the resisting torque due to friction in the collar-bearing pivot of the adjoining figure.
2. Supposing the normal pressure to be constant, derive an expression for the resisting torque due to friction in the conical pivot of the adjoining figure.
3. In the preceding problem suppose the vertical component of the normal pressure to be constant.
4. In problem 2 suppose the horizontal component of the normal pressure to be constant.
6. Taking the normal pressure to be constant derive an expression for the resisting torque, due to friction in the spherical pivot of the adjoining figure.